Automated system consisting of recorded computer software and hardware for operating and monitoring of downhole motors and components

Mine borers; drilling machines; bearings [parts of machines]

Vehicle tires; solid rubber vehicle tires; inner tubes for vehicle tires

drilling equipment

ELECTRONIC INSTRUMENTATION FOR MONITORING WELL DRILLING PARAMETERS

HAND-OPERATED GASOLINE-ENGINE DRIVEN DRILLS FOR DRILLING HOLES IN METAL, WOOD, CONCRETE AND THE LIKE.

COMPUTERIZED LEARNING SUPPORT APPARATUS FOR DRILLING STUDENTS IN ARITHMETIC-NAMELY, A MIMI-COMPUTER BASED MODULE HAVING A PUSH BUTTON OPERATED ELECTRONIC DISPLAY

ELECTRIC MOTOR DRIVEN GRINDERS, SANDERS, POLISHERS, BUFFERS,

Core drilling bits